lead

[usmc1963]

ok so i was melting down some lead i got at the junk yard all very soft sheet lead and it has a thick gold film on top of it never had this happen before has anyone seen this before its about 3/4 of a pound

[leadbutt]

Quite common. More so with pure lead. Turn down the heat.

[Beagle333]

agree with above.

[JonB_in_Glencoe]

see post #7
http://castboolits.gunloads.com/showthread.php?63550-Gold-and-purple-and-blue-Oh-My!